Retrieve detailed information about a NewRelic entity by its GUID. Returns entity metadata, tags, and type-specific metrics (APM throughput/error rate, Browser page views, etc).
AI agents call get_entity to retrieve information from NewRelic MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and retrieves existing NewRelic entity data by GUID. It performs a GET-like operation that reads metadata and metrics without creating, modifying, deleting, executing code, or moving money. The blast radius of misuse is minimal—an attacker gains visibility into monitoring data but cannot affect systems or data integrity.
From the tool's definition Tool name 'get_entity' and description 'Retrieve detailed information' indicate data retrieval with no modification. Returns 'entity metadata, tags, and type-specific metrics' with no side effects.
Attacks that exploit this kind of access
Retrieve detailed information about a NewRelic entity by its GUID. Returns entity metadata, tags, and type-specific metrics (APM throughput/error rate, Browser page views, etc). It is categorised as a Read tool in the NewRelic MCP Server MCP Server, which means it retrieves data without modifying state.
Register the NewRelic MCP Server MCP server in PolicyLayer and add a rule for get_entity: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches NewRelic MCP Server. Nothing to install.
get_entity is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_entity rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_entity. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_entity is provided by the NewRelic MCP Server MCP server (ruminaider/newrelic-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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